Drain valve



July 10, 1945.

.1. c. sHAw ETAL 2,379,995

DRAIN VALVE Filed oct. 25.91943 means 8. The structure `sh'own respectively in the form of a Patented July 1D, 1945k 2,379,995 DRAIN VALVE Joe C.` Shaw and Earl H. i signors to Young Radiat `The main objects `olf thisf invention are to provide anvimproved valve mechanism for theldrain openingsvof fluid containers; to provide a valve drain mechanism ofithiskind having improved mally closed valve member; to proved valve mechanism of this u u ple construction that it .n'iayV beteconomically manufactured and be marketed as aunit suitable for attachmentto almostV any and to provide an improved valve mech'anism oi' this kind particularlysuitablefor use-Withair- ,provide g an imlcraitoilcoolers.` c

In the particular embodiments oitheinvention 4shown inthe drawing:

Fig. `1 is a cross sectionalview fshovvingfhe imopening, the valve 4beingin its'` open or retracted I position;

Fig. `2is a similarviewshowing the valvelin its closed position;` i v y M u (Fig. 3` is alower end `View ofFig.` l;` Fig. `4 is an upper end viewof Fig. 2; and

f rig. 5 `isa view similar` to Fig. "1, but showing a modiiiediorm of valve housing.

A In;` an improved drain vvalve of-thistype the housing may be formed c u of theftwoparts and 6 as ,shown in Figs. v1 aruiiZL .or asa single piece 6J as shown in Fig. 5. Within the housing-is mounted avvalve mechanismmlpand inconnection with which is arrangeda shifting and retaining u l is suited for attachment to a fitting 9 through Whichthe contents of `ai'luid container I Il are to be drained. v 9

In the twofparthousng the parts 5 and'S are an adapter and a nipple. As a bushing the part 5 would be provided with an `external thread II whereby it may -be screwed `into the threaded tting 9. As an adapter it could be provided with a plate for bolting the housing onto the fitting 9. The internal thread I2 on vthe bushing 5 receives the complementary thread4 on `the nipple.`

I4 are interposedbetweenl l part 5. Gaskets I3`and the bushing 5 and the fitting 9 and between the means for retracting and retaining open `the norl type of container;

bushing or kindof suchsimor plate 2 I`,"secured in the lower` @en end of the" housing part s. x i r -I proved` valve mechanism attached to `a drain i pin at"25.\l `to the diameterof the Asmall portion maa, Racine, wis.. as! or Company,

a corpora.-

ation( october 25, 1949-seria1f1vdl(597,544 1 u `iolaims (Gilat-34)` i c l i y u `The valve-supporting plate I1 is suitablyse-` cured within the housing. -This plateisprovided witha vseries of apertures I1.Iwhich`al1ow` for `communieation through the`va1ve huly In the two part` housing the plate is secured direct- 1y above the `threadedeno of` `the nipple part o, In the single piece housing the plate'is gheld in place` similar to that hereinafterv by asnap1l`11"g.|"|.`2I u described in connection with plate 2 I. l v u u The valve-retracting and retaining meansf includes a stem" 20 coacting witha support strap The pin 29 has its `upper end `rounded at 22to lit in a recess 23`atthe bottomof thevalve inem` ber I5to form a balland socket Joint. i The pin20 extends througha keyhole `slot 24 in the strap or plate 2l and isprovided with spaced shoulders 25` and `2li l which?coactjrespectively` with the larger I andnarrower portions of the keyhole slot 24 for "securing the pin `in either @f thetwo Possible Positions. The shoulder 25 is `formed by recessing the of the keyhole slot 24 in the plate 2l. `This permitsthe shoulder 25 to: rest against the plate 2I u ;I5 in its retracted or unseatedfposition as shown der 26 is in the form of aA collar of larger diameter suo parts 5 and `Ii respectively to insure a positive u sealing between these several parts.

When the housing is a single piece 5.I` the end may be` threaded as shown `or may have aflange formed thereon assuggested above. i

The valve mechanism 'I includes a valve member I5 carried on a stem hubbed plate Il and urged by a spring I8 into Vengagement with a valve seat I9 formed in the housing part 6.

I6` slidably supported on a drain outlet, of almost than the largerlportion ofthe keyhole slot 24. It 'is positioned u u u u u valvel to completely yseat and permit the pin to occupy a fsafety posi-.- tion` so as Ito prevent the` pin from being accidentally shifted` and causean unseating of the valvedV The safety position of these parts is shown The" retainingl'plate 2| i is"removably secured within the housing part B by means of a snap ring 1 21, which is seated in a groove 28 formed inthel The ends of the snap ring 2l are `bent to form shoulders 28 by means ofwhch the i ring maybe contracted to permit its insertion into or removal from the groove 28. c y v The use `and operationl of the device herein housing part 6.

shown is quite apparent fromthe foregoing description. When the severalparts are assembled the unit may be attached to the conventional any `iluid receptacle,` 4by simply screwing the threadedend II into the fitting 9. v Normallythepin 20 Wouldbe shifted into the largerportion of the keyhole shown in Fig. 2, wherebythe springxIB `would seat the valve member I5, thus retaining the contents in the container I0; C

When the container is tobe drained it is neces-` in Fig; 1.` 'rneshoul-` on the pin 2liu so that its contact with `the plate `2I will allow the sary only to push the pin `20 inwardly against the action of the spring I8 thereby unseating the valve. If a small quantity of the liquid is to be drained, the pin 2U may be held with the valve l5 in its retracted position. However, if it is desired to leave the valve I5 in its retracted position for an extended draining operation the pin would be shifted intothe narrow part ofjthe'keyhole slot 24 as shownin Fig. 1. The parts may be allowed to remain in such position until the draining of the receptacle is completed. When the draining operation is to, be ended the pin can again. be.V

shifted to the larger portion of the keyhole slot whereupon the valve member I5',would'again'be# 1 1 come seated. Although two embodiments of this invention have been herein shown anddescribed,l it willbe ilow of fluid through said housing, a spring interunderstood that details of the construction shown may be altered without departing fromltlie-s'piritw of the invention as .deiined by vthe,,following said supporting-plate andadapted to cooperate V with Vsaid valve seat for controlling the flow' of uidthrough said"h'ousing, a spring interposed between `said valve and said suportingfvalve for seating saidvalve, avalve-shifting pinjI supported on' said othe r housingl part incontact with said valve @mi .Shiftable leXially' and laterally: 0f' Said housing between positionsv to 'eiect the seating and unseatingQof said valve, a pin-supporting platexedfin said other'housingf member and having a keyhole slottherein for receivings'aid rasend ,Shelilders en vSaidrpirr adapted .toceect with said plate for retainingsaid pinin either 'of its positions.

2'. Adrain vaivemehanisincbinpnsingaiiosthe former of which is'adapted for attachment "to the train opening of a receptaclelandthe latter of' whichghasa valveseaft formed therein, af prfora' porting-plate Aand adapted to cooperate with said valve seatfor controllingthe :flow of iiuid through said, housing, a spring. interposed* between said apin-supporting said nipple andfhaving a keyhole slot 4"f orr'ned ing formedofa bushingafnd an'intertting nipple valve-supportingplate secured in-said bushing, a valveslidably supported .onsaidsupplatejand valve 'for rnormally seating lsaid valve, plate secured inthe open end of seated.

therein, a valve-shifting pin extending through said keyhole slot and having a ball and socket connection with said valve and shiftable axially and laterally of said housing, and shoulders on `ment of 1 said pin and for holding saidpin ln nonshiftable position when said valve is seated or un- 3. A drain valve unit comprising a housing formed at one end for removable insertion in the drain opening of a fluid container, a valve seat formed in said housing intermediate its ends, a perforateplate in'one end of said housing, a valve slidably supported on said plate and adapted` to cooperate with said valve seat for controlling the posdbetween said plate and valve for normally holding `s aid valve onsaid seat, a slotted plate vfixedinfsaid housing inwardly of the opposite end thereof, a; pin"exte nding through said slot and abutting, against said valve and movable axially andlaterally'of said housing between' positions for` seatingvv and` unseating said' valve, and Acoacting shoulderslon' said fpin'spaced apart axially thereof and separately engageable with the lplate perimeter of'glsad sloten the inner face of said plate forholding saidpin in either of its respeo tive positions. f I

l4. A drain* valve unit comprising a housing formed 'at one end for removable insertion in the drain opening of a fluid container, a valve y seat 4formed in said housing intermediate its ends, a perforate plate in one end of said housing, a valve slidably {supportedon said plate and adapted to cooperate with said valve seat vfor controllingithe flow of iiuld through said housing, a 'spring-interposed between said plate and valve for normally holding vsaid valve on said seat, akeyhole slotted plate xed in said housing inwardly of theopposite end thereof a distance equal to the intended movement of said valve,'" a pin' extending through saidv keyhole slot `andabutting against said valve and movable axiallyand laterallyv of said housing between positionsfor seating and unseating said valve, andjcoacting shoulders onsaid pin engageable w'ith the plate perimeter of the opposite vportionsofsaidkeyhole slot for holdngwsaid pin in itsrespective positions, the axial spacing of said shoulderson said being suchthat the endof tljiefpin never protrudes `beyond the extremity of said housing'. 

